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(11)

EP 3 925 390 A1

(12)

(43) Date of publication: 22.12.2021 Bulletin 2021/51 (21) Application number: 20709346.9 (22) Date of filing: 12.02.2020

(51) International Patent Classification (IPC):  H04W 76/10(2018.01) H04W 28/02(2009.01) H04W 12/10(2021.01) (52) Cooperative Patent Classification (CPC): H04W 28/02; H04W 76/15; H04W 12/106 (86) International application number: PCT/JP2020/005292 (87) International publication number: WO 2020/166593 (20.08.2020 Gazette 2020/34)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 15.02.2019 GB 201902167 (71) Applicant: NEC Corporation 108-8001 Tokyo (JP)	(72) Inventors: KHIRALLAH, Chadi Tokyo 108-8001 (JP) SINGH,Jagdeep Ahluwalia Tokyo 108-8001 (JP) HAYASHI, Sadafuku Tokyo 108-8001 (JP) GUPTA, Neeraj Tokyo 108-8001 (JP) (74) Representative: MacDougall, Alan John Shaw et al Mathys & Squire The Shard 32 London Bridge Street London SE1 9SG London SE1 9SG (GB)